Grinding-machine.



A. B. FOWLER. GRINDING MACHINE. APPLICATION FILED MAY 2-. 1914.

1 ,205,985. Patented Nov. 28', 1916.

WT/VESSEF. //I/ L/E/V 70R MW I UNITED STATES PATENT carton.

ALFRED B. FOWLER, OF BEVERLY, MASSACHUSETTS, ASSIGNOR- TO UNITED SHOE MACHINERY COMPANY, OF PATEBSON, NEW JERSEY, CORPORATION OF NEW JERSEY.

GRINDING-MACHINE.

Specification of Letters Patent.

Patented Nov. 28, 1916.

To all whom it may concern:

Be it known that I, ALFRED B. FOWLER, a citizen of the United States, residing at Beverly, in the county of Essex and State of Massachusetts, have invented certain Improvements in Grinding-Machines, of which the following description, in connection with the accompanyingdrawing, is a specification.

This invention relates to grinding machines, and an important object of the invention is to provide apparatus for use in grinding or sharpening one of the parts of a machine which is used for trimming the looselyprojecting edges of the upper materials in a lasted shoe, as shown, for example, in U. S. Letters Patent No. 922,697 granted upon the application of J. B. Hadaway May 25, 1909. This trimming machine includes a roll which is formed with a screwthreaded bore to permit it to be mounted upon the threaded end of a rotating spindle and has a spirally ribbed periphery which operates to upraise from the insole the projecting edge portion of the upper as the roll is rotated about an aXis substantially perpendicular to the shoe bottom. The mate-. rial to be trimmed is thus positioned with its edge portion projecting above the upper end face of the roll which serves in cooper ation with an oscillating knife as a shearing member to trim the upstanding edges of the material to a uniform extent. It will be evident, therefore, that for effective operation the end face of the roll must be ground so as to present sharpened peripheral edges to cooperate with the knife, while at the same time the end face of the roll must be maintained in perpendicular relation to the axis of rotation of the roll. 7

A particular object of this invention is to provide improved mechanism by the use of which the rolls above described may be ground accurately and effectively. should be understood, however, that the invention is not limited to use in grinding articles of this particular character, but is to be regarded as of general utility for grinding other similar machine parts or like articles wherever its use may be found advantageous.

The invention comprises novel supporting ing an article having a screw-threaded bore, a

the spindle or like supporting member is provided, as in the illustrated embodiment of the lnventlon, wlth a threaded portion for engagement in such bore, and the meansfor restraining the article from' turning movement upon its support has the important function of preventing such endwise displacement of the article as to disturb its effective operative relation to the grinding member. In the illustrated arrangement both the spindle and the roll are prevented from turning during grinding, but the in vent-ion, in its broader aspects, is not limited in this particular, since obviously the mechanism for preventing the roll from turning upon its support may be adapted with equal advantages to a construction in which the support and roll are rotated together during the grinding operation.

The above and other features of the invention, including certain details of construction and combinations of parts, will now be described with reference to the accompanying drawing and pointed out in the claims.

The drawing shows in front elevation a portion of a grinding machine in which the invention is embodied.

The grinding member comprises an emery wheel 2 which is carried by a shaft 4 rotatable in a bearing formed in a standard 6 which is to be secured to a bench orother stationary support. In fixed relation to the standard. 6, and preferably formed a as a part of the same casting, is a standard 8 in which is secured a rod or spindle 10 which provides a bearing for an oscillating frame 12, this frame being formed with bearings 14 and 16 for a spindle or rod 18, hereinafter termed a spindle, one end of which is of reduced diameter and screw-threaded for the reception of the roll or like article to be ground. The roll is shown at 20 mounted upon the spindle in position for grinding. The rod 10 and the spindle 18 are both arranged in parallel relation to the shaft 4, so that as the frame 12 is oscillated the end face of the roll 20 will be maintained in parallel relation to the end face of the emery wheel 2. A projection 22 on the frame 12 serves by contact with the standard 8 to limit forward tipping movement of the frame. The frame is adjusted by means of a screw 2% to carry the roll to be ground toward or from the grinding member 2.

The spindle 18 is movable lengthwise in the bearings 14: and 16, and is surrounded by a spring 26 which contacts at one end with the bearing portion 16 of the frame 12 and bears at its other end against a collar 28 on the spindle. The spring thus tends to force the spindle 18 toward the right as viewed in the drawing. The spindle is to be moved in the opposite direction by means of a handle 30 which is pivotally connected therewith at one side of the bearing 14: and is fulcrumed upon a bar 32 which encircles the spindle 18 at the opposite side of the bearing 14:.

Mounted upon the spindle 18 at that side of the bearing 16 which faces the grinding member 2 is a collar 34: which carries a pin 36 that crosses an annular recess in the spindle so as to permit limited relative movement of the spindle and collar lengthwise of the spindle. The collar is in contact at one end with the bearing portion 16 of the frame 12, and is suitably formed at its other end to project over a part of the reduced portion of the spindle and engage the article to be ground when the spindle is forced by the spring 26 in the direction to bring the article into engagement with the collar. For grinding the trimming machine roll shown at 20, which is formed with a conical periphery, the end of the collar is beveled at its inner edge, as shown, so as to secure effective engagement with the roll without injuring the surface of the latter.

It will be understood that when no roll is mounted on the end of the spindle, movement of the latter under the influence of the spring 26 will be limited by engagement of the collar 28 with the bar 32 or of an end wall of the reduced portion of the spindle with the pin 36. With the spindle in this position and the frame 12 tipped forward as far as permitted by the projection 22, so as to clear the emery wheel, the operator by means of the handle 30 forces the spindle lengthwise sufficiently to permit a roll 20 or like article to be screwed upon the end thereof. For this purpose the diameter of the threaded portion of the spindle should obviously be such as to fit the bore in the article to be ground. The handle 30 is then released, permitting the spring 26 to operate and seat the roll 20 firmly upon the end of the collar 3%. By adjustment of the screw 24: the frame is then moved so as to position the end face of the roll in effective relation to the end face of the emery wheel, and by oscillation of the frame 12 the roll is advanced and retracted across the face of the wheel as many times as desired.

The frictional engagement of the roll 20 with the collar 3% and of the latter with the frame are, in the construction shown, sufficient to prevent rotation of the roll during the grinding operation. Obviously, however, more positive means may be provided, if desired, for preventing the collar 34 from turning with reference to the frame or with reference to the spindle 18. It will be understood also that in other respects the invention is not limited to the precise details of construction shown and described, but that various embodiments are comprehended within the spirit and scope of the invention defined in the appended claims.

Having described the invention, what I claim as new and desire to secure by Letters Patent of the United States is the following:

1. In a grinding machine, the combination with a grinding member, of a supportin g member having a threaded portion upon which to screw an article with a threaded bore to present the article in position to be ground by the grinding member, and means arranged to engage said article to prevent it from turning upon its supporting member during the grinding operation.

2. In machine for grinding an article having a screw-threaded bore, the combination with a grinding member, of a supporting spindle threaded at one end for engagement in the bore in said article to present the article in operative relation to the grinding member, and means mounted upon the spindle arranged to engage said article to prevent it from turning relatively to the spindle during the grinding operation.

In a grinding machine, a spindle arranged to engage in an opening in an article to be ground to present the article in operative relation to the grinding member, and means for preventing relative rotation of the article and the spindle during the grinding operation comprising a retaining member between which and the spindle there is provision for relative sliding movement lengthwise of the spindle, and resilient means for holding said member and the article in engagement.

1. In a grinding machine, a spindle upon which to mount an article to be ground, and means for preventing rotation of the article relatively to the spindle comprising a retaining member encircling the spindle with provision for relative movement of the mem her and the spindle lengthwise of the spindle, said spindle being constructed to receive the article to be ground at one side of said member, and means at the opposite side of said member for eifecting relative movement of the spindle and the member to cause the member to engage said article.

5. In-a grinding machine, the combination with a grinding member, of a spindle upon which to mount an article to be ground a support provided with a bearing for the spindle, means at one side of said bearing arranged to engage the article to be ground upon movement of the spindle lengthwise in the bearing to prevent the article from turning relatively to the spindle, and means at the other side of the bearing for effecting such lengthwise movement of the spindle.

6. In a grinding machine, the combination with a grinding member, of a spindle upon which to mount an article to be ground, a support provided with a bearing for the spindle, a member arranged to engage the article to be ground upon movement of the spindle in one direction lengthwise in the bearing to prevent the article from turning relatively to the spindle, resilient means for eifecting such movement of the spindle, and manual means for moving the spindle in the opposite direction.

7. In a grinding machine, the combination with a grinding member, of a spindle upon which to mount an article to be ground, a support provided with a bearing for the spindle, a collar encircling the spindle at one side of said bearing and arranged to engage the article to be ground upon movement of the spindle lengthwise in the bearing, and a spring encircling the spindle at the opposite side of the bearing and arranged to efiect such lengthwise movement of the spindle.

8. In a machine for grinding the end face of a roll having a. conical peripheral surface, a spindle upon which to mount the roll, a collar encircling the spindle and having at one end a beveled edge for engagement with the conical surface of the roll, and resilient means for causing the collar to press upon the roll.

9. In a machine for grinding the end face of a roll having a conical peripheral surface and a threaded bore, a spindle having a threaded end portion of reduced diameter upon which to screw the roll, a collar mounted upon the spindle and arranged to project over a part of the reduced portion thereof into engagement with the conical surface of the roll, and means for holding said collar in engagement with the roll.

10. In a grinding machine, the combination with a grinding member, of work positioning means comprising a spindle having an end portion constructed to engage in an openlng man article to be ground to position the artlclefor the grinding operation, a support having a bearing in which the spindle is mounted for lengthwise movement, means at one side of said bearing for engaging the article to prevent it from turning relatively to the spindle, anda spring arranged for operating the spindle to effect yielding engagement between the article and said engaging means.

11. In apparatus of the class described, a

work holder comprising a spindle having 'an end portlon threaded for engagement in a threaded bore in an article to be ground, a collar mounted on. the spindle, and a spring encircling the spindle and arranged to operate said collar and the spindle relatively to maintain yielding engagement between the collar and saidarticle.

12. A grinding machine having, in combination, a rotatable grinding member, and

1 work positioning means comprising a work support mounted for movement in a plane substantially parallel to the plane of the grinding face of said member, a spindle mounted in said support for lengthwise movement in substantially parallel relation to the axis of said member and having an end portion constructed to receive an article to be ground, means adjacent to the spindle arranged for engagement with said article to prevent it from turning relatively to the spindle, and a spring for operating said means and the spindle relatively to maintain said means in yielding engagement with the article.

13. A grinding machine having, in combination, a grinding member, and work positioning means comprising a work support mounted for movement in a plane substantially parallel to the grinding face vof said member, a spindle carried by said support having an end portion threaded for engagement 1n a threaded bore in an article to be ground, a bearing on the support in which the spindle is mounted for lengthwise movement in substantially perpendicular relation to the plane of the grinding member, a collar on the spindle at one side of said bearing arranged to engage the article to be ground to prevent the article from turning about the axis of the spindle, and a sprin encircling the spindle at the other side oi said bearing and arranged to operate the spindle to maintain the article and the collar in en gagement.

14. In a grinding machine, the combination with a grinding wheel, of. a spindle formed at one end to receive and support an article to be ground and mounted with said work receiving end directed toward an end face of the Wheel, a bearing in which said spindle is supported for lengthwise movement, means at one side of said bear- In testimony whereof I have signed my ing for engaging said article to prevent name to this specification'in the presence of the article from turning relatively to the two subscribing Witnesses.

spindle, and means tending to move the ALFRED B. FOWLER. spindle lengthwise in a direction to mainlVitnesses:

tain engagement between the article and CHESTER E. ROGERS, sald engaging means. LAURA M. GOODRIDGE.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. 0. 

